4 Questions Answered About Shielded Cabling Systems

2024-03-29

There are two types of wiring in the integrated wiring system, namely, unshielded wiring and shielded wiring. The shielded wiring method originated in Europe. It mainly adds a metal shielding layer to the outside of the ordinary unshielded wiring system. The principle is to use the emission, absorption and skin effect of the metal shielding layer to prevent electromagnetic interference and electromagnetic radiation. The shielding system comprehensively utilizes the principle of twisted pair balance and the shielding effect of the shielding layer, so it has very good electromagnetic compatibility (EMC) characteristics. In addition, shielded wiring is gradually showing its advantages in electromagnetic compatibility. At present, many countries in Europe, America, North America and other countries have already used this type of wiring.

　　Based on the advantages of shielded cabling, it can help the rapid development of the Internet. Many large data centers use shielded cabling systems. Therefore, the use of shielded cabling systems is one of the main trends in network cabling in the future. Let's take a look at the problems related to shielded cabling in the process of network cabling.

　　First, what are EMC characteristics?

　　EMC is electromagnetic compatibility, which means that electronic equipment or network systems have a certain ability to resist electromagnetic interference and cannot generate excessive electromagnetic radiation. In other words, the equipment or network system is required to be able to work normally in a relatively harsh electromagnetic environment and cannot radiate excessive electromagnetic waves to interfere with the normal operation of other surrounding equipment and networks.

 

　　Second, how do you measure the performance difference between shielded and unshielded systems?

　　The advantage of the FTP cable shielding system is that it provides better EMC performance than UTP cables. It is based on isolating the system from the external electromagnetic environment. Because the external electromagnetic environment will affect the data transmission of the entire wiring system. So far, there is no performance index or test method to express or compare EMC performance.

 

 

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